<template>
    <div class="city-list" ref="wrapper">
        <div>
            <div class="city-area">
                <div class="title border-topbottom">当前城市</div>
                <div class="btn-list">
                    <div class="btn-wrap">
                        <div class="btn-city">{{this.curryCity}}</div>
                    </div>
                </div>
            </div>
            <div class="city-area">
                <div class="title border-topbottom">热门城市</div>
                <div class="btn-list">
                    <div
                        class="btn-wrap"
                        v-for="item of hot"
                        :key="item.id"
                        @click = "handleCityClick(item.name)"
                    >
                        <div class="btn-city">{{item.name}}</div>
                    </div>
                </div>
            </div>
            <div
                class="city-area"
                v-for="(item, key) of cities"
                :key="key"
                :ref="key"
            >
                <div class="title border-topbottom">{{ key }}</div>
                <div class="item-list"
                    v-for="itemcity of item"
                    :key="itemcity.id"
                    @click = "handleCityClick(itemcity.name)"
                >
                    <div class="item border-bottom">{{ itemcity.name }}</div>
                </div>
            </div>
        </div>
    </div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapState, mapMutations} from 'vuex'
export default {
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    letter: String
  },
  // 监听letter
  watch: {
    letter () {
      console.log(this.letter)
      if (this.letter) {
        const element = this.$refs[this.letter][0]
        this.scroll.scrollToElement(element)
      }
    }
  },
  methods: {
    handleCityClick (city) {
      //  console.log(city)
      //  this.$store.dispatch('changeCity', city)
      //  this.$store.commit('mCity', city)
      this.mCity(city)
      this.$router.push('/')
    },
    ...mapMutations(['mCity'])
  },
  computed: {
    ...mapState({
      curryCity: 'city'
    })
  },
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper, { mouseWheel: true, click: true, tap: true })
  }
}
</script>

<style lang="stylus" scoped>
    .city-area
        overflow hidden
    .border-topbottom
        &:before
            border-color:#ccc
        &:after
            border-color:#ccc
    .border-bottom
        &:before
            border-color:#ccc
    .city-list
        overflow hidden
        position absolute
        top 1.58rem
        right 0
        bottom 0
        left 0
        // background #f00
        .title
            line-height .6rem
            background #eee
            padding-left .2rem
            font-size .26rem
        .btn-list
            overflow hidden
            padding: .1rem .6rem .1rem .1rem
            .btn-wrap
                float left
                width 33.33%
                .btn-city
                    margin .1rem
                    padding .1rem 0
                    text-align center
                    border .02rem solid #ccc
                    border-radius .06rem
        .item-list
            .item
                line-height .76rem
                color #666
                padding-left .2rem
</style>
